I agree with you, which is why I impatiently await a wide release of SteamOS, which delivers a console-like experience for whatever hardware you want, and also the return of Steam Machines for dedicated hardware. I have ChimeraOS installed but it's far from perfect.

Also I ran a small poll a while back and the vast majority use their PCs for more than just gaming (which makes sense) so we would need to see more Windows-exclusive software ported over to Linux before you could switch over entirely.

But obviously there is an entire market for consoles that Linux hasn't really penetrated.

Personally I run a dual-boot system so I can have the best of both but I'm not sure Microsoft would approve of that being sold "out of the box".